TY - JOUR
T1 - A synthetic and theoretical study of the aggregation of amidoaluminium hydrides
T2 - Solid-state of the trimethylamine adduct [(Me3Si)2NAl(Cl)(H) middot; NMe3]
AU - Gardiner, Michael G.
AU - Koutsantonls, George A.
AU - Lawrence, Stacey M.
AU - Lee, Fu Chin
AU - Raston, Colin L.
PY - 1996/1/1
Y1 - 1996/1/1
N2 - The amidoaluminium hydride complexes [(Me3Si)2NAl(X)(H) · NMe3], X = H (1), Cl (2), were prepared by the metallation of bis(trimethylsilyl)amine by A1(X)(H)2 NMe3 (X = H and Cl]. The molecular structure of 2 as a inonomeric Lewis base adduct with four-coordinate aluminium centres and terminal amido groups was confirmed by X-ray crystal structure determination. We also find that bis(trimethylsilyl)amine forms a thermally stable adduct of alane, (Me3Si)2N(H) · A1H3 (3). Ab initio molecular orbital calculations on the possible products arising from these reactions yielding 1 and 2 revealed that the amido-bridged species, {(μ-H2N)A1(X)H}2 (X = H and Cl), are favoured over nitrogen donor Lewis base adduct formation, H2NA1(X)(H) · NH3 (X = H and Cl), and then chlorobridged, {H2NAl(μ-X)(H)}2, (X = Cl only), and hydridobridged species, [H2NAl(X)(μ-H))2 (X = H and Cl).
AB - The amidoaluminium hydride complexes [(Me3Si)2NAl(X)(H) · NMe3], X = H (1), Cl (2), were prepared by the metallation of bis(trimethylsilyl)amine by A1(X)(H)2 NMe3 (X = H and Cl]. The molecular structure of 2 as a inonomeric Lewis base adduct with four-coordinate aluminium centres and terminal amido groups was confirmed by X-ray crystal structure determination. We also find that bis(trimethylsilyl)amine forms a thermally stable adduct of alane, (Me3Si)2N(H) · A1H3 (3). Ab initio molecular orbital calculations on the possible products arising from these reactions yielding 1 and 2 revealed that the amido-bridged species, {(μ-H2N)A1(X)H}2 (X = H and Cl), are favoured over nitrogen donor Lewis base adduct formation, H2NA1(X)(H) · NH3 (X = H and Cl), and then chlorobridged, {H2NAl(μ-X)(H)}2, (X = Cl only), and hydridobridged species, [H2NAl(X)(μ-H))2 (X = H and Cl).
KW - Alane
KW - Amide
KW - Amido
KW - Association
KW - Hydride
UR - http://www.scopus.com/inward/record.url?scp=0001191287&partnerID=8YFLogxK
U2 - 10.1002/cber.19961290511
DO - 10.1002/cber.19961290511
M3 - Article
AN - SCOPUS:0001191287
VL - 129
SP - 545
EP - 549
JO - Chemische Berichte
JF - Chemische Berichte
SN - 0009-2940
IS - 5
ER -